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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 21, Iss. 1 — Jan. 1, 2004
  • pp: 29–35

Measuring the above-threshold group-velocity dispersion and gain curvature of a semiconductor laser by pulse-propagation techniques

R. Gordon, A. P. Heberle, and J. R. A. Cleaver  »View Author Affiliations

JOSA B, Vol. 21, Issue 1, pp. 29-35 (2004)

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The dispersive broadening of a single optical pulse traveling within a Fabry–Pérot semiconductor laser was measured for propagation over 58 round trips of the cavity, a distance of 352 mm. The interference between two copropagating pulses with variable relative phase (stabilized to within 2π×0.02 rad) was used to relate the group-velocity dispersion to the gain curvature. With both single- and double-pulse propagation measurements, the complex group-velocity dispersion (including gain curvature) was found to be 8.7+5.9i ps<sup>2</sup>/m at twice the laser-threshold bias current. When the laser bias was increased from 1.4 to 2 times the laser threshold, the gain curvature decreased by 2.8%, and the group-velocity dispersion showed less than 0.1% variation.

© 2004 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(140.5960) Lasers and laser optics : Semiconductor lasers
(320.7150) Ultrafast optics : Ultrafast spectroscopy

R. Gordon, A. P. Heberle, and J. R. A. Cleaver, "Measuring the above-threshold group-velocity dispersion and gain curvature of a semiconductor laser by pulse-propagation techniques," J. Opt. Soc. Am. B 21, 29-35 (2004)

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